\begin{tabular}{l*{12}{D{.}{.}{-1}}}
                &\multicolumn{3}{c}{Ageism Explicit}                     &\multicolumn{3}{c}{Ageism Thermometer}                  &\multicolumn{3}{c}{Ageism Index}                        &\multicolumn{3}{c}{Ageism IAT Score}                    \\\cmidrule(lr){2-4}\cmidrule(lr){5-7}\cmidrule(lr){8-10}\cmidrule(lr){11-13}
                &\multicolumn{1}{c}{(1)}         &\multicolumn{1}{c}{(2)}         &\multicolumn{1}{c}{(3)}         &\multicolumn{1}{c}{(4)}         &\multicolumn{1}{c}{(5)}         &\multicolumn{1}{c}{(6)}         &\multicolumn{1}{c}{(7)}         &\multicolumn{1}{c}{(8)}         &\multicolumn{1}{c}{(9)}         &\multicolumn{1}{c}{(10)}         &\multicolumn{1}{c}{(11)}         &\multicolumn{1}{c}{(12)}         \\
\midrule
Generational Grievances Index&    0.415\sym{***}&                  &    0.389\sym{***}&    0.209\sym{***}&                  &    0.188\sym{**} &    0.160\sym{**} &                  &    0.091         &   -0.018         &                  &   -0.008         \\
                &  (0.084)         &                  &  (0.086)         &  (0.079)         &                  &  (0.079)         &  (0.081)         &                  &  (0.073)         &  (0.037)         &                  &  (0.037)         \\
\addlinespace
Personal Grievances Index&                  &    0.215\sym{***}&    0.163\sym{**} &                  &    0.161\sym{**} &    0.136\sym{*}  &                  &    0.457\sym{***}&    0.445\sym{***}&                  &   -0.048         &   -0.047         \\
                &                  &  (0.076)         &  (0.074)         &                  &  (0.081)         &  (0.080)         &                  &  (0.073)         &  (0.071)         &                  &  (0.044)         &  (0.044)         \\
\midrule
Observations    &      424         &      424         &      424         &      427         &      427         &      427         &      427         &      427         &      427         &      168         &      168         &      168         \\
Adjusted \(R^{2}\)&    0.056         &    0.016         &    0.064         &    0.015         &    0.009         &    0.021         &    0.010         &    0.115         &    0.117         &   -0.005         &    0.002         &   -0.004         \\
\end{tabular}
